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Mo, Yuji – ProQuest LLC, 2022
The research in this dissertation consists of two parts: An active learning algorithm for hierarchical labels and an embedding-based retrieval algorithm. In the first part, we present a new approach for learning hierarchically decomposable concepts. The approach learns a high-level classifier (e.g., location vs. non-location) by separately…
Descriptors: Active Learning, Algorithms, Classification, Models
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Edgardo A. Stubbs – European Journal of Education (EJED), 2021
Nautical charts are an essential information resource for safe navigation. However, they are not only a useful resource for navigators; According to the International Hydrological Organization (IHO), they essentially fulfill two functions: 1) Maritime navigation, since most hydrographic services have the obligation to provide coverage of the…
Descriptors: Navigation, Information Sources, Charts, Oceanography
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Gutiérrez-de-Rozas, Belén; Molina, Elvira Carpintero; López-Martín, Esther – European Journal of Educational Research, 2022
Academic failure and school dropout, or early school leaving, are two of the situations that most concern countries and educational institutions worldwide, because of their prevalence and also their economic and social implications. Despite this prominent role that academic failure and school dropout have in societies, there seems to be no…
Descriptors: Academic Failure, Dropout Rate, Research Reports, Incidence
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Mariangela Spotti Lopes Fujita; Roberta Cristina Dal’Evedove Tartarotti; Paula Regina Dal´Evedove; Maria Carolina Andrade e Cruz – College & Research Libraries, 2024
Considering the importance of subject retrieval for scientific visibility, and the need to guide authors in self-archiving their papers in institutional repositories of university libraries, this study observed the patterns and strategies used by authors while indexing for keyword assignment. The study examined four categories of analysis:…
Descriptors: Foreign Countries, Authors, Research Libraries, Scientific and Technical Information
Arielle A. Gaither – ProQuest LLC, 2021
Bag-of-words is a commonly used text representation method for many text classification applications. However, bag-of-words representation fails to consider the context of the text because it only examines text documents based on the presence of individual words and explores relationships between texts with similar word choices (Bengfort, 2018).…
Descriptors: Journal Articles, Classification, Language Usage, Databases